Finding the Fourth Proportional to 12,603.80, 17,391.81 and 7,297.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,603.80 : 17,391.81 = 7,297.63 : x
2. Step 2: Convert to fraction form
   12,603.80/17,391.81 = 7,297.63/x
3. Step 3: Cross multiply
   12,603.80x = 17,391.81 × 7,297.63
4. Step 4: Simplify right side
   12,603.80x = 126,918,978.30
5. Step 5: Solve for x
   x = 126,918,978.30/12,603.80
6. Step 6: Final answer
   x = 10,069.90